. 2020 Jul 31;22(7):e16924. doi: 10.2196/16924
©Amberly Brigden, Emma Anderson, Catherine Linney, Richard Morris, Roxanne Parslow, Teona Serafimova, Lucie Smith, Emily Briggs, Maria Loades, Esther Crawley. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 31.07.2020.
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Figure 1.
PRISMA flow diagram. RCT: randomized controlled trial.